US1209182A - Gas-valve. - Google Patents

Description

B. LOUGH & R. E. MILLER.

GAS VALVE.

APPLICAT 27, 19H3. 1,209,182. Patented Dec. 19,1916.

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APPLICATION FILED mm1.. Iam. 1,209,182. Patented De0.19,1916. V

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BERT LOUGH AND ROBERT E. MILLER, OF IVIORGANTOWN, WEST VIRGINIA.` i

GAS-VALVE.

Specication of Letters Patent. Patented Dec. 19, 1916.

Application led April 27, 1916. Serial No. 94,044.

To all whom t may concern:

Be it known that we, BERT LoUGH and ROBERT E. MILLER, citizens of the United States, residing at Morgantown, in the county of Monongalia, State of West Virginia, have invented certain new and useful mprovements in Gas-Valves; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in gas valves, and particularly to valves which are `used where gas pressure is reduced at been left turned on and the pressure is reduced sufiicientlyV to put the flame out and is later renewed.

Another object is toprovide a device of this character which includes a gravity valve for automatically closing the main gas passage when the gas pressure is reduced and which will prevent gas flowing through the said passage even though the main valve remains in open position.

A further object is to provide a device of this character in which the closing of the main gas'valve after the gas pressureis returned, will automatically reset the parts so that when the main valve is again opened the parts will be in normal operative position.

Other objects and advantages will be apparent from the following description when taken in connection with the'accompanying drawing. Y

In the drawing: Figure 1 is a vertical longitudinal sectional view through a valve made in accordance with our invention, the

parts being in normal or operative position; Fig. 2 is'a vertical section on the line 2-2 of Fig. 1; Fig. 3 is a vertical section on the line 3-3 of Fig. 1; Fig. 4 is a section similar to Fig. 1, but showing the parts in the position assumed when the turning plug is closed; Fig. 5 is a vertical longitudinal sectional view through a modified form of my device showing the parts in normal position; Fig. 6 is a similar section showing the parts in inoperative osition; Fig. 7 is a section on the line 7'i) of Fig. 1; Fig. 8 is a vertically extending groove 16. Extending through the casing from the opposite end is a passage 17, the same turning upwardly as at 18 from whence it extends straight in-V wardly and communicates with the chamber 14 at vthe side opposite to the shoulder." lt will be noted that the inner end of the vchannel 17 is disposed above the shoulder 13, the purpose of this appearing later. Disposed vertically through the casing, and across the upper portion of the passage17 is a tapered plug valve 19 formed with atransverse pas-V sage 20 adapted for alinement or registry with'the passage 17.

Extending from the lower portion of the opening or seat 21 in which the plug valve is arranged, to the lower portion of the chamber 14' is apassage 22, the first-named end of said passage being adapted for registry with the lower horizontal portion of the vertically disposed and substantially Z-shaped `passage 23 formed in vthe lower portion of the plug. A'passage 24 extends from thev Ycurved portion 18 ofthe passage 17 to the seat 21 in position to register with the upper horizontal portion'of the passage 23., A third inclined passage 25 establishes directv "communication between the passage 17 andthe chamber 14, at a point above the passage 22. Disposed for -vertical sliding'movement'in the chamber 14 below the shoulder, is a piston 26, the same having a suitable washer 27 secured to its Ylowerface to prevent escape of gas therearound. '0n the upper side of the piston is avertical member 27 on one side of which is formed a laterally extending arm 28 having its end reduced as at 29 and mov able within the before-mentioned groove 16. On the lowerfaceof this arm is a rubber ball valve 30 adapted to be seated within the upper end of the vertical portion 12 of Vthe passage 11. v

and down and out the-passagell.

` are as shown in Fig. 1. Gas pressure enters valve 19 remains in open position, the gas below the piston will be forced up through the passage and out through the passage 17, this gas being forced by the downward movement, by gravity, of the piston 26. YWhen this piston falls to the limit of its down-ward movement, the ball valve will be seated within the upper end of the pas- Y sager12. The piston drops far enough to close the inner end of the passage 25 so that Vshould the gas pressure return it could not Y the passage 17. This brings the upper end Copies of this patent may be obtained for get below the piston so as toV raise it. Also by reason of the fact that the valve 30 is on its seat, the gas that passes into the chamber above the piston assists in holding'the valve to its seat. Thus the danger of gas escaping by the return of the pressure is climi-- nated. y y

To restore the parts to normal working position, the plug `19 is firstV turnedY so as to move its passage 20 out of alinement with of the passage 23 in registry with the passage 24C and the lower end in registry with the passage 22. It will be noted that the chamber end of the passage 22 is below the piston when the said piston is in its lowermost position. rllhis position of the valve 19 permits gas to pass from the passage 17 through the plug by means of the passage 23 to a position beneath the piston to cause the piston to rise and unseat the valve 30. Thiswill raise the piston above the inner end of the passage 25 and thus permit gas fromthe passage y17 to flow beneath the piston and hold the same in elevated position. The plug valve 19. can then be turned into open position Vand gas passed through thecasing as iirst described.

Referring particularly to Figs. 5 and 6 there is shown a similar casing 10 having the passages 11 and 17 similar to those of the iirst form, except that the passage 11 communicates, at its inner end with a vertical passage-way 31, this passage establishing communication between an upper chamber 32 and the lower chamber 14. The passage 17 communicates with the upper chamber while an inclined passage 25 connects this before-named passage with the chamber 14 above a passage 22 which Vconnects the chamber 14 with the lower end of the passage 23 in thepvalve plug'19. A passage 24 similar in construction and operation to the passage 24 is also provided. The lower end of the chamber 14 is closed by a removable screw plug33. rlhe piston 26 has a stem 27 extending upwardly through the passage 31, and on the upperend of this stem is an inverted conical valve 34E which engages with a conical seat 35 in the bottom wall of the upper chamber 32. The operation of Vthis form is identical with that of the other form and the result obtainedY is the same. The only practical differencebetween this form and the previous form is in the exact construction and arrangement of the central chamber and the piston valve.

`What is claimed is Y Y An automatic gas pressure valve comprising an elongated casing having longitudinally extending inlet and outlet passages offset with respect to each other, one end of the casing having aV vertical chamber formed therein, a turning plug mounted in the other end of the casing, an inclined passage connecting the inlet passage with the lower portion of the chamber, a horizontal passage connecting the valve seat with the chamber below the rst passage, said first passage extending around the'valve and out of communication with the seat, said plug having a substantially [fl-shaped passage extending longitudinally therethrough and arranged to have its lower end in registry with the said horizontal passage at times, a short inclined passage arrangedV to register with the upper end ofthe Z-shaped passage at times, and communicating with the inlet passage, a vertically movable gravity piston mounted in the chamber and arranged to close the adjacent end of the inclined passage at times, a valve member carried by the piston `for controlling the inner end of the outlet passage, said valve'also having a transverse passage for registration with the inlet passage.

In testimony whereof, we affix our signatures in the presence of two witnesses.

BERT LOUGH. ROBERT E. MILLER. Witnesses: Y

E. WV. HILL, J. L. Rosina.

ve cents each, by addressing the Commissioner of Patents, Washington, D. Cif

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